Here is a photo of the pattern, it has since been painted.



So I will be making a 2 part mould around this pattern. The sheet wax is so I can then use the pattern as a internal mould.

to add to that, how many layers of fibreglass you need depends on the total size and how its supported when fitted.  With what looks like a few bends in it, it may well be fairly stiff with only 3 or 4 layers.  If you curved the edges to have an oblong duct rather than rectangular, it would be even stiffer.

Hi I may have misunderstood what you are trying to do but here goes!!!!!

It is an aid duct for a car

I will try carbon fibre someday but its still a prototype so dont want to waste expensive material.

If I wax and pva why would it stick ? I have come up with a way of holding the pattern 1mm away from the mould but if you think 1mm thickness is too thin then back to the drawing board

Hi, First of all may I ask you what it is?

Hi,



After lots of planning I am about to commit to my project and buy some mould making materials. As you can see from the simple cad, I will be making a 2 part mould, however I intend on using the pattern as an internal mould. So will be applying a layer of sheet wax onto the pattern first. 

I have a few questions:

I intend to make the final part out of fibreglass, would a thickness of 1mm, including top coat be enough for a rigid part ?

I will be buying the "Epoxy Mould Making Starter Kit". Is there enough to make moulds of both sides ? The front face length is 280mm

more to follow.

Thanks